<table cellspacing="0" cellpadding="0" border="0" ><tr><td valign="top" style="font: inherit;">Hello Jim, Thanks for the help so far. I disabled SELinux and I tried starting Nagios again but I noticed that Nagios was not running. I am logged in as the root user in the Linux. Could that be the problem why my Nagios is not running? Ifeanyi Agu 08063728802 --- On Wed, 25/8/10, Jim Avery <jim@jimavery.me.uk> wrote: <blockquote style="border-left: 2px solid rgb(16, 16, 255); margin-left: 5px; padding-left: 5px;"> From: Jim Avery <jim@jimavery.me.uk> Subject: Re: [Nagios-users] Internal Server Error Occuring when trying to access Nagios on the browser To: "Nagios Users List" <nagios-users@lists.sourceforge.net> Date: Wednesday, 25 August, 2010, 12:47 PM <div class="plainMail">On 25 August 2010 12:22, Ifeanyi Agu <<a ymailto="mailto:ifepet2002@yahoo.com" href="/mc/compose?to=ifepet2002@yahoo.com">ifepet2002@yahoo.com</a>> wrote: > > Hello Jim, > > I used this link (<a href="http://www.kernelhardware.org/install-nagios-on-centos-5/" target="_blank">http://www.kernelhardware.org/install-nagios-on-centos-5/</a>) to install my Nagios. I did all that you said while installing. I ran this command ps -ef | grep nagios and I saw an output What output did you see? > but I did not see anything that shows me whether Nagios Daemon is running or not. How do I know? You should see the nagios process(es) listed (possibly along with the grep process which is part of the command you just ran) something like this: nagios 401 1 23 Aug13 ? 2-18:48:18 /usr/local/nagios/bin/nagios -d /usr/local/nagios/etc/nagios.cfg nagios 17576 401 0 12:42 ? 00:00:00 /usr/local/nagios/bin/nagios -d /usr/local/nagios/etc/nagios.cfg nagios 17650 401 0 12:42 ? 00:00:00 /usr/local/nagios/bin/nagios -d /usr/local/nagios/etc/nagios.cfg nagios 17725 401 1 12:42 ? 00:00:00 /usr/local/nagios/bin/nagios -d /usr/local/nagios/etc/nagios.cfg nagios 17728 401 1 12:42 ? 00:00:00 /usr/local/nagios/bin/nagios -d /usr/local/nagios/etc/nagios.cfg mylogin 17746 526 0 12:42 pts/0 00:00:00 grep nagios Looking at the comments on the web page where you got the instructions from, it also seems likely that SELINUX is enabled on your Centos linux OS. Personally I would disable it as it's a right pain to manage otherwise. I don't run RedHat or Centos myself so can't tell you how to do that. Please can I also ask you to send your emails to this list in plain text? The formatting can be a bit tricky to work with when quoting back a reply. Cheers, Jim ------------------------------------------------------------------------------ Sell apps to millions through the Intel(R) Atom(Tm) Developer Program Be part of this innovative community and reach millions of netbook users worldwide. Take advantage of special opportunities to increase revenue and speed time-to-market. Join now, and jumpstart your future. <a href="http://p.sf.net/sfu/intel-atom-d2d" target="_blank">http://p.sf.net/sfu/intel-atom-d2d</a> _______________________________________________ Nagios-users mailing list <a ymailto="mailto:Nagios-users@lists.sourceforge.net" href="/mc/compose?to=Nagios-users@lists.sourceforge.net">Nagios-users@lists.sourceforge.net</a> <a href="https://lists.sourceforge.net/lists/listinfo/nagios-users" target="_blank">https://lists.sourceforge.net/lists/listinfo/nagios-users</a> ::: Please include Nagios version, plugin version (-v) and OS when reporting any issue. ::: Messages without supporting info will risk being sent to /dev/null </div></blockquote></td></tr></table>